Malkovich 104 - Joaz vs Chew Terr

Chew Terr · **#21**

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Loons · **#22**

@Horibe (and I guess, topazg)

@No-one

@Chew

Chew Terr · **#23**

@Loons:

topazg · **#24**

@Loons:

EdLee · **#25**

Chew Terr:

Joaz Banbeck · **#26**

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . 5 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

comments later...

Chew Terr · **#27**

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Joaz Banbeck · **#28**

Joaz Banbeck wrote:

...
comments later...

Comments on move 5:

I believe that my honorable opponent has made a slight mis-step on move #4.

The most common approaches to a 5-4 are the 3-4 and 3-3 invasions ( noted with 'a' and 'b' below ). The 5-3 approach is generally regarded as special purpose move, used only for the rare occasion in which the side is worth more than the corner. In this instance, given that there is only one other stone on the side ( at Q 16 ), the side is not worth more.

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , a . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I clearly cannot let black continue from his approach and have the corner like this:

Click Here To Show Diagram Code: [go]$$Wc White is eyeless and floating $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . 6 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So the obvious answer for me is to take the 3-3 point for myself:

Click Here To Show Diagram Code: [go]$$Wc White gets the corner $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . 5 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This not only gets a small corner for me, but it threatens to attack his stone with a pincer:

Click Here To Show Diagram Code: [go]$$Wc $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 7 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . 5 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...or shoulder hit:

Click Here To Show Diagram Code: [go]$$Wc $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . 7 . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . 5 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So I will not only get territory, I'll probably get sente when he defends.
There is only one reasonable way to defend:

Click Here To Show Diagram Code: [go]$$Wc The simple 2-space jump $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 6 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . . . . . 5 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The slide underneath is just too small:

Click Here To Show Diagram Code: [go]$$Wc Black gets maybe two points, \n white gets more than that and a solid base\n ...and sente $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . O , . 8 . | $$ | . . . . . . . . . . . . . . . . 5 6 . | $$ | . . . . . . . . . . . . . . . 9 . 7 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

====================================================

Another way of looking at this involves tewari analysis ( see http://senseis.xmp.net/?Tewari ) If we consider the same position, but pretend that it was arrived at by a different sequence, we sometimes can gain additional insight.

Let's look at it like this:

Click Here To Show Diagram Code: [go]$$Wc Same stones, different order of placement $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . X . . . . . , . . . . 5 , . . . | $$ | . . . . . . . . . . . . . . . . 3 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Here we have a white 3-3 stone alone in a corner, and black makes a 5-3 approach. This is rather odd, making a low approach to a low stone. The 3-3 stone is the king of low stones, being low with respect to two sides, and any low stone attempting to contest it in 'lowness' will come in second.

The primary weakness that 3-3 stone has is that it lacks influence, so the common approaches are high, at the circled spots:

Click Here To Show Diagram Code: [go]$$Wc Three high approaches, on biased to one side, one to the other,\n and one squatting directly on top. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . C . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X . . . . . , . . . C . C . . . | $$ | . . . . . . . . . . . . . . . . 3 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This is usually the most reasonable approach - to take what the 3-3 stone has left easily available.

Again, in this joseki, the 3-5 is a special purpose play, used when the side is worth more than the corner. And again, in this game, it looks odd because the side is not bigger.

=========================================================================

In summary: He played toward the side too much, so I'll take the corner. Net result is better for me.

Joaz Banbeck · **#29**

Comments on my next move - for observers:

Joaz Banbeck · **#30**

Further comments for beginners:

About the choice of play on the left:

If the play in the center were to go as shown with the circled stones:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , 1 . . | $$ | . . . . . . . . . . . . 5 . 3 . . . . | $$ | . . . . . . . . . 9 . 7 . . . . X . . | $$ | . . . . . . . . . . 6 8 4 . 2 . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . W W W W W W . . O , . . . | $$ | . . . . . . B B B B B B . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...then an attack like :w1:

fits. ( It is generally a good idea to push your victims against a wall if you have one, using it like an anvil. )

But trying to use two perpendicular walls to make territory is inefficient:

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . 5 . . . . . 4 . . | $$ | . . . . . . . . . . . . 6 . . . X . . | $$ | . . . . . . . . . . . . . . . 3 . . . | $$ | . . . . . . . . . . . . . . . 1 2 . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . W W W W W W . . O , . . . | $$ | . . . . . . B B B B B B . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...and the putative territory can be easily invaded.

However, if the lower center turned out like this:

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . 7 , . . . | $$ | . . . . . . . . . . . . . . . . 6 . . | $$ | . . . . . . . . . . . . . . . 5 X . . | $$ | . . . . . . . . . . 9 . . . . 3 4 . . | $$ | . . B . . . . . . . . 8 . . . 1 2 . . | $$ | . . . . . . . . W . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . B . W . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Now making territory looks possible because invaders can be crushed against the newly created wall.

Note: these schemes are somewhat idealized, so there may be possible sequences that do work contrary to what I have said. Nonetheless, the idea here is to illustrate the general themes that arise from one type of resolution of the lower middle vs another type, and why the decisions on the left must wait.

Bill Spight · **#31**

"

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . B . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . 4 . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Not a criticism of :b4:

in the game, but this is another approach. It is difficult for White to reply on the 3-3.

topazg · **#32**

Joaz Banbeck · **#33**

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . 7 . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Having decided that there is nothing urgent on the right side, I'm going to look at the rest of the board.

There are moderately big plays at the top, but nothing urgent. There are bigger plays on the left side, but again, nothing urgent. On the bottom, there is an urgent issue: black can play N3. It ruins the shape of the corner, and deprives it of the natural extension along the lower side.

Click Here To Show Diagram Code: [go]$$Wc Prisoner Count: B-0 W-0 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . . B . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So my next move has to deal with that. The easiest and simplest way is to play there or immediately nearby myself.

Click Here To Show Diagram Code: [go]$$Bc Solid but unenterprising. 'A' works also. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . . . W a . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Another possibility is to play someplace along the bottom such that he can play N3, but the results are no good for him because he has insufficient room for an extension, like this:

Click Here To Show Diagram Code: [go]$$Bc Black is heavy with no eyes. Moves 'b' through 'g' also work. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 4 . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . e f g . 3 . O , . . . | $$ | . . . . . . . b c d W . 1 2 . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I'm going to choose the second possibility because the first looks too passive. I'm 2 stones behind, so I need to push him a bit. Which one? I think that I can dismiss the high moves 'e', 'f', and 'g' because they leave an open skirt and can be undercut too easily:

Click Here To Show Diagram Code: [go]$$Bc White has no easy follow up move. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . W , . . . . O , . . . | $$ | . . . . . . 1 . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So it comes down to one of these:

Click Here To Show Diagram Code: [go]$$Bc $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . x x x x . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The leftmost one is the most ambitious. It prevents the formation of an easy extension by black, but its follow up move still leaves an invasion:

Click Here To Show Diagram Code: [go]$$Bc Invasion possible at move 3 or later $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . 1 . W . . 2 . 3 . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The next looks better:

Click Here To Show Diagram Code: [go]$$Bc No invasion, but flat. Hard to develop quickly. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . 1 . W . . 2 . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The next is my favorite, because it has a good follow up

Click Here To Show Diagram Code: [go]$$Bc No invasion likely, and I get influence $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . 2 . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . 1 . . W . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Lastly, the rightmost is too small for my tastes:

Click Here To Show Diagram Code: [go]$$Bc No invasion, and I get influence, but a tad small $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . 2 . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . 1 . . . W . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

topazg · **#34**

Maybe that explains it, it appears Joaz is unaware that what Chew has played is joseki. I think White is too thin here. Black can't approach from the lower left easily, but then, that's not urgent anyway. He now has weak points to aim at:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . . . O , . . . | $$ | . . . . . . . . . 7 c a b . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Both "a" and "b" can cause White some locally reasonably serious issues now. Joseki was "a" or "b" in much the same way that is here:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . O . . . . . . . . . | $$ | . . . X . . . . . , . . . . . X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . 3 . . . | $$ | . . . . . . . . . . . . . . . . . 7 . | $$ | . . . X . . . . . , . . . . 2 , 1 . . | $$ | . . . . . . . . . . b a . . . 6 4 5 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Loons · **#35**

@topazg

@Chew

daniel_the_smith · **#36**

@loons, topazg:

topazg · **#37**

Loons wrote:

@topazg

topazg · **#38**

@Loons

Bill Spight · **#39**

Joaz Banbeck · **#40**

For beginners:

Joaz Banbeck wrote:

...
Another possibility is to play someplace along the bottom such that he can play N3, but the results are no good for him because he has insufficient room for an extension, like this:

Click Here To Show Diagram Code: [go]$$Bc Black is heavy with no eyes. Moves 'b' through 'g' also work. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 4 . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . e f g . 3 . O , . . . | $$ | . . . . . . . b c d W . 1 2 . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...

The idea behind this is that stones along the side like extensions for eye space.

The usual rule of thumb for doing this is to extend one more than the length of your wall, like this:

Click Here To Show Diagram Code: [go]$$B With one stone, extend two spaces $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$. . . . . 1 . . X . . . $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$-----------------------[/go]

Click Here To Show Diagram Code: [go]$$B With two stones, extend three spaces $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$. . . . . . . . . X . . $$. . . . . 1 . . . X . . $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$-----------------------[/go]

Click Here To Show Diagram Code: [go]$$B With three stones, extend four spaces $$. . . . . . . . . . . . $$. . . . . . . . X . . . $$. . . 1 . . . . X . . . $$. . . . . . . . X . . . $$. . . . . . . . . . . . $$. . . . . . . . . . . . $$-----------------------[/go]

You have probably seen this formation in some of your games:

Click Here To Show Diagram Code: [go]$$W You kick white, but he builds a comfortable place for eyes. $$. . . . . . . . . . . . | $$. . . . . . . . . . . . | $$. . . . . . . . 4 . . . | $$. . . . . . . . . . . . | $$. . 5 . . . 3 . X . . . | $$. . . . . . 1 2 . . . . | $$. . . . . . . . . . . . | $$. . . . . . . . . . . . | $$-----------------------[/go]

So, given that rule of thumb about extensions, let's go back to the game and its possible continuation, and look at comfortable extensions or lack of comfortable extensions. Black would like to wreck my shape with N3:

Click Here To Show Diagram Code: [go]$$Bc Black would like to have this. \nMove 5 could be at 'a' also. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 4 . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . a . . . 3 . O , . . . | $$ | . . . . . . . . 5 . . . 1 2 . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Bc Black is cramped and inefficient if I have something like the circled stone. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 4 . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . 3 . O , . . . | $$ | . . . . . . . . W . 5 . 1 2 . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Bc Black has no room for an extension if I have the circled stone here. $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 4 . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . X . . . . . , . . 3 . O , . . . | $$ | . . . . . . . . . W . . 1 2 . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

In summary, I'm willing to let black invade. I'm just trying to structure things so that he won't be happy after he does.

Malkovich 104 - Joaz vs Chew Terr

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